Bread-raising cabinet



July 1939s. F. A. ANETSBERGER Er AL 1,769,048

` 'BREAD- RAISING CABINET Filed Feb. 1o, 192'/ z stme1:s'-shee' y l L L i L ,L .20 43 V l 46.115

-yf' L In l 116 "YY1 "w 'July 1, 193m FL A. ANEsBr-:RGER Er Al.

'BREAD .RAISING CABINET Filed Feb. l0. 1927 2 ShoetsfSheet 2 @mhe/35.2K*

Waff/ba@ Patented July` 1, 1930 UNITEDSTATES PATENTS orales K- BREAD-RAISING CABINE'i1V .ilppleatonV filed February 10192'2.` Serial No. 167,286.

This invention relates to improvements in bread raising cabinets, such as are employed by bakers for holding the bread or bun dough during the raising of the same, and sometimes calledprcong boxes.k

'l The principal object of the invention is to provide an improved cabinet of the type referred to which* is provided with Ventilating or air circulation passages by means of which a uniform 'distribution of heat and moisture within the cabinet is possible.

Another object relates to the `provision ofV shields or defiectors which may be used when desired todeflect the air currents from the vertical passages into the horizontal passages between the bread pans, thus insuring still greater uniformity in heat distribution and ventilator, than in cabinets as heretofore constructed.r y

A further objectfrelates to improvements in the cabinet heating means whereby a compact arrangement is provided and which canr be adjusted to vary the heat and humidity within vthe cabinet.

'2 Another object of the inventionrelates to the arrangement of bread pan supporting shelvesanduco-operating framework whereby the various members are supported independently of the side walls of the cabinet, and y can thus beconstructed with less handwerk and more economically than can cabinets of the type generally inlluse.l

yAdditional objects relate to various features of construction and arrangementy of pai ts which w1ll become apparent from a consideration of the following speciicationiand accompanying drawings, wherein j Figure 1 is a vertical sectional view taken Figa 5`is a perspective view of a center .Figf is anenlarged front-elevation of a The'cabinet preferably has a sheet metal 55` exterior 10- built around a framework, of metal members', preferably of angle or l.-

form. `The framework consists of front and rear angle base members 11, the vertical flanges of which Vhave the adjacent sheet 6oy metal covering 10 riveted or otherwise secured thereto. 'Extending upwardly from the base members 11 are the two pairs of cornerv posts 13, 13 and 14, 14, each pair having two anges 13?, l13a and 14a, 14a, respectively. The G5 flanges of each pair are disposed in the same plane, and spaced from the adjacent walls 10by the other flanges 13b," 13b and 14h, 14b of the said members, as shown in Fig. 2.

The pansupporting members orshelves 15 70 are 'secured as by rivets to the posts 13 and 14, and are thus spaced from the adjacent side walls of the cabinet Vto provide Ventilating passages 16 and 17 Upper angle members 13 V at front and rear connect the upper ends of 7r vthe posts 13and 14,;and are arranged with.

respect to the walls ofthe cabinet, similarly to the basemembers 11. The cabinet preferably, although'not necessarily, is arranged for two tiers of bread pans, and thus shelves S0 19 and 20, complementary to the side shelves 15, 15, are provided` in the center of the cabinet. The shelves 19 are secured to the verti-l v cal members 21, 21,.and shelves 2O to the verj tical members 22, 22, which are attached to the base and topportions of the frame. The uprights 21, 21 constitute. a pair and are spaced, asy shown in Fig. 2, from the pair con- Y sisting of members 22, 22, and thus provide a vertical Ventilatingv or air circulation pas sage23 in the center of the cabinet.

As will be seen, the'framework of the cabinet consists of'sta-ndard L or angle members, the rivet holes in which can` be made by a punch press. In the-prior construction where the relatively large metal sheets of the cabi net have the` shelves riveted to them, a considerable amount of hand drilling is necessary, and yno Ventilating passages are'provided between the side walls of the cabinet Lil ' otherwise supported.

and the ends of the pans carried on the shelves. As will be obvious, the presentimproved cabinet lends to machine production, in large measure, and a very sturdy cabinet of low cost production has been provided.

A heater for controlling the temperature within the cabinet is also provided,l which heater may consist of'a rectangular sheet metal enclosure 24, which is open at the bottom and is supported by legs a short distance above the floor 26of the cabinet. A heating coil 27 is positioned within the heater 24 and consists of right and left turn coils united at their upper and lower ends to horizontal pipes 28 and 29, which extend from the side of a vertical pipe or auxiliarytank 30 which is positioned outside the heater 24. This arrangement permits the water to circulate through the'coils 27 and auxiliary tank 30 and to thus heat the relatively small quantity of watertherein without heating the water of the main tank 31. The coil 27, as stated, consists of right and left hand coils, which are arranged to mesh substantially as shown in Fig. 7, whereby an unusually large heating surface ispro-l vided in the relatively small space available.v

A water supply tank 31 is connected bya short pipe to the auxiliary tank 30. The main tank 31 is supplied with water through a suitable pipe 33, from any source of supply. Within the tank 31, an automatic shutoff valve v34 of standard construction is provided which is operated by means of a float 35. Water Howing through the pipe 33 is shut olf when the level of the water within the tank has risen to a proper height. A drain pipe 35a may be provided whereby the water from the tank can be drained out when desired.

A burner 36 is also provided which, in normal operative position, rests on the oor of' auxiliary tank 30 extends somewhat' abover the water level in tank 31, thus providing av chamber 30a in the upper end of tank 30. By providing this chamber 30a, the steam-.is permitted to escape through pipes 37 without ejecting water, as will be clear. TheV members 37 deflect the steam or vapor upwardly and effect a more uniform distribution of the same with reference to the central passages'23 and side passages 16 and 17 thanY would be the case if the steam were discharged freely from the pipes 37. Y Beneath the top of heater 24 is provided a heat spreader or deflector 38k which, as shown inFig. 1, slopes downwardly toward the center. p To the right ofthe coil,v as viewed in Fig. 3, a shield 39'is provided and which may be attached to the spreader 38, or

The flexible union 40a permits the burner to be swung toward the front of the cabinet to a position at the right of the shield 39, as viewed in Fig'. 3, or to a position outside of the heater 24, as shown in dotted lines in the same figure. A suitable handle 42 is provided whereby the burner can be moved manually, as above mentioned. When the humidity of the air within the cabinet is at the desired maximum, the burner is moved by means of the handle 42 to the right ofthe shield`39, as viewed in Fig. 3, whereby the burner continues to heat the cabinet, and does not generate any additional steam. The products of combustion are conducted toward the ends of the heater 24 by means of thek spreader 38, thence over the same and upwardly out of the cabinet through the exhaustpipe 43.

In use, the pans of bread are inserted in the cabinet upon the shelves 15, 19 and 15, 20, and the burner is pulled to the exterior or righthand position, as viewed in Fig. 3, lighted and returned to its position under the coils 27. The heat tends to rise through the passages 16, 17 and 23, but to increase circulation horizontally of the cabinet between the pans, bailles 44 are provided'. As shown in Fig. 4, the side baiiles may consist of suit'- ably shaped pieces of'sheet metal each adapt-y ed to rest upon one ofthe shelves 15 and hav,-

ing a horizontally extending iiange 45 for closing the side passages 16 or 17. The upwardly risingcolumn of air is thus deflected horizontally under the pans toward the central passage 23. These side deflectors 44 may be spaced as desired along each side of the cabinet and center baflies or defiectors 46, shown in perspective in Fig. 5, may be arranged in staggered relation with reference to the side baliies to deflect the heated air back toward the side passages. The center baiiies 46 may be formed in two sections, one being disposed 'on each side of exhaust pipe 43.y

It will be obvious that by means of the passages provided and by using the deflectors or baffles just described, the heated air `may be caused to travel circuitous'paths in rising froi'nthe'base of the cabinet' to the top 'thereof. A thermometer 4.6a may be provided, if desired, and other registering instruments, such as a hygrometer may alsobe used when desired. y

,Thev cabinet is provided with a pair of sliding doors 47, each having rollers 48 secured to a central top extension 47, which rollers travel within the channel members 49, 49 at the top of the cabinet. The sheet metal top is shaped to enclose the channel member 49 on` three sides and extends downwardly a distance below the members 49, 49 to form a seal 50 between the upper edges of the doors. An outer corner reinforcing angleni'ron 51 'encloses member 49', as shown, and 'overlies llf) suspending the rollers as described, insteadV of having them at the bottom of the doors,as in many of the cabinets as heretofore constructed, the rollers are maintained free from foreign substances which tend to prevent the free operation thereof.

Immediately above the heater 24. on the lower shelves preferably, we provide deflecting shields 52 which may consist of a piece of sheetV metal shaped as in Fig. 1,.,or

an empty bread pan may be used in lieu thereof. We find it preferable, as a rule, not to place bread on the shelves immediately above the heater because of the excess of heatl at those points.

Although we have shown various features of construction and arrangement of parts, it

will be understood that such are for the purpose of illustration only, and we do not wish to be restricted to the specic embodiment of the invention herein shown and described, except where limitations thereto appear in the appended claim.

We claim: f

Humidifying andheating apparatus coinprising a casing having side, end and top walls and'being open at the bottom, legs supporting said casing to admit air into said `open bottom, a distributor plate secured to opposite sidewalls of the casing and spaced from the top wall thereof, said plate being inclined upwardly from the center and kterminating short of the end walls ofthe casing, a shield depending from the approximate center of said plate, a water coil positioned between said shield and one side wall of the casing, means for supplying water to said coil, said coil having an outlet lfor the free escape ofvapor generated therein, and a manually movable burner slidable laterally of said casing in the space beneath the same aorded by said` legs whereby heat can be directed to either side of said shield, said casing having an outlet in the top Wall for the escape of heated air and products of combustion after the same have been caused to flow around said deilector to heat said casing. l In testimony whereof, our names.

FRANK A. ANETSBERGER.

WILLIAM ANETSBERGER,

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